How high is the Big Black River Near Depot Mountain, Maine right now?

The Big Black River Near Depot Mountain, Maine is currently flowing at 243 cubic feet per second with a gage height of 4.45 feet, based on the most recent USGS instantaneous reading.

Is the flow on the Big Black River Near Depot Mountain, Maine normal for this time of year?

Current flow is classified as normal for October 28. Today's discharge is at the 42th percentile compared to the long-term historical record at this gauge.

Is the Big Black River Near Depot Mountain, Maine at flood stage?

No — the gage height is 9.05 feet below the NWS flood-stage threshold of 13.5 feet.

What is the historical median flow for the Big Black River Near Depot Mountain, Maine on October 28?

The long-term median discharge for this date is 318 cfs based on USGS daily statistics. The 10th–95th percentile range historically is 47 to 1,540 cfs.

Where is the Big Black River Near Depot Mountain, Maine stream gauge located?

The Big Black River Near Depot Mountain, Maine stream gauge is operated by the USGS in Aroostook County, ME on the Big Black River. USGS site number 01010070 (coordinates 46.8939, -69.7517).

Big Black River Near Depot Mountain, Maine

USGS Site No: 01010070 • Big Black River • Aroostook County, ME

Big Black River Near Depot Mountain, Maine on the Big Black River is currently at 243 cfs (Normal — 42th percentile for this date) . Gage height: 4.45 ft.

Reading from 4 months ago

243

CFS Discharge

4.45

Gage Height (ft)

Normal

Flow Condition

Normal

Flood Status

Historical Percentile Comparison

Today's discharge compared to the long-term record for October 28 at this station. Percentile rank shows what fraction of historical years had lower flow on this date.

Percentile	Label	CFS Threshold	Today's Flow
10th	Very Low threshold	47
25th	Low threshold	89
50th (Median)	Normal (median)	318	Today: 243 cfs
75th	High threshold	441
95th	Very High threshold	1,540

30-Day Hydrograph

Recent discharge plotted against the historical 10th–95th percentile envelope for the same calendar days. Source: USGS daily values + long-term statistics.

10th–95th historical Day-of-year median Recent discharge

30-Day Flow History

Date	Discharge (CFS)	Gage Ht (ft)
May 28, 2026	413	—
May 27, 2026	422	—
May 26, 2026	171	—
May 25, 2026	109	—
May 24, 2026	98	—
May 23, 2026	110	—
May 22, 2026	124	—
May 21, 2026	145	—
May 20, 2026	162	—
May 19, 2026	168	—
May 18, 2026	189	—
May 17, 2026	218	—
May 16, 2026	264	—
May 15, 2026	291	—
Apr 21, 2026	1,910	—
Apr 20, 2026	3,240	—
Apr 19, 2026	3,960	—
Apr 18, 2026	3,760	—
Apr 17, 2026	3,310	—
Nov 28, 2025	184	—
Nov 27, 2025	111	—
Nov 26, 2025	74	—
Nov 25, 2025	74	—
Nov 24, 2025	76	—
Nov 23, 2025	81	—
Nov 22, 2025	86	—
Nov 21, 2025	91	—
Nov 20, 2025	97	—
Nov 19, 2025	103	—
Nov 18, 2025	114	—

Station Information

USGS Site No: 01010070
State: ME
County: Aroostook County
Coordinates: 46.8939, -69.7517
Drainage Area: 194 mi²
Datum (ft): 875.3
HUC Code: 01010001

View on USGS NWIS →

Flood Stage Thresholds

Action Stage: 12.5 ft
Flood Stage: 13.5 ft
Moderate Flood: 15.0 ft

Currently 9.05 ft below flood stage.

Recent Extremes

Max discharge: 3,960 cfs

Apr 19, 2026
Min discharge: 19 cfs

Sep 22, 2025
Days at flood stage: 0

Computed from the local daily-values archive.

Nearby Gauges

St. John River at Ninemile Bridge, Maine
13.5 mi · 1,370 cfs

Normal
Allagash River Near Allagash, Maine
33.9 mi · 1,830 cfs

Normal
St. John River at Dickey, Maine
34.7 mi · 4,190 cfs

Normal